counter = 0

for i in range(10):
    if(i <= 12 and i >= 1):
        counter += 1
    if(1+i <= 12):
        counter += 1
    if(2+i <= 12):
        counter += 1

for i in range(2):
    if(3+i <= 12):
        if(i == 1 and (3 + i == 2 or 3 + i == 4 or 3 + i == 6 or 3 + i == 9 or 3 + i == 11)):
            counter += 0
        else:
            counter += 1

print(counter)